Table 2.

Comparison of baseline optical coherence tomographic characteristics between early AMD patients with and without reticular pseudodrusen

	Reticular pseudodrusen group (n = 60)	Non-reticular pseudodrusen group (n = 75)	P-value*	Age-adjusted P-value†
Mean retinal thickness (μm)	287.31 ± 24.36	294.27 ± 20.71	0.075	0.493
Subfoveal choroidal thickness (μm)	158.13 ± 42.53	237.89 ± 60.94	<  0.001	<  0.001
3 mm drusen area (mm2)**	0.50 ± 0.74	0.37 ± 0.73	0.308	0.929
5 mm drusen area (mm2)**	0.80 ± 1.07	0.55 ± 1.02	0.182	0.764
Square root of 3 mm drusen area	0.50 ± 0.51	0.33 ± 0.51	0.071	0.519
Square root of 5 mm drusen area	0.65 ± 0.62	0.44 ± 0.61	0.045	0.434

*Independent t-test, P-value < 0.005 (0.05/10) was considered to be statistically significant with the Bonferroni correction

^†ANCOVA test, P-value < 0.005 (0.05/10) was considered to be statistically significant with the Bonferroni correction

**Drusen area under the retinal pigment epithelium